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MELSEC-Q

 

12   CONTROL SUB FUNCTIONS 

 

12.7.4 Teaching function 

The "teaching function" is used to set addresses aligned using the manual control 
(JOG operation, inching operation manual pulse generator operation) in the positioning 
data addresses ("

Da.6

Positioning address/movement amount", "

Da.7

 Arc 

address"). 

 

The details shown below explain about the "teaching function".  
  [1] Control details 
  [2] Precautions during control 
  [3] Data used in teaching 
  [4] Teaching procedure 
  [5] Teaching program example 

 

[1]   Control details 

(1)   Teaching timing  

Teaching is executed using the PLC program when the BUSY signal (XC, 
XD, XE, XF) is OFF. (During manual control, teaching can be carried out as 
long as the axis is not BUSY, even when an error or warning has occurred.) 

 

(2)   Addresses for which teaching is possible 

The addresses for which teaching is possible are "current feed values" 
(

Md.20

Current feed value) having the OP as a reference.  The settings of 

the "movement amount" used in incremental system positioning cannot be 
used. In the teaching function, these "current feed values" are set in the 
"

Da.6

 Positioning address/movement amount" or "

Da.7

 Arc address".  

 

  

Positioning 

data 

Positions aligned by manual 
control 

 

 

"Current feed value" A 

 

Da.6

Positioning address/movement 

amount 

 

 

 

"Current feed value" B 

 

Da.7

Arc address 

 

 

 

 

(3)   Dedicated instructions "TEACH 1, TEACH 2, TEACH 3, 

TEACH 4, PFWRT" 

When the dedicated instructions "TEACH 1, TEACH 2, TEACH 3, TEACH 
4, PFWRT" are used to execute the teaching function, the programming 
becomes easier. Refer to Chapter 14 "Dedicated instructions" for details.